Most emulators tend to run slower than the device they're simulating, and can potentially take a lot of processing power.Emulators can allow you to run apps that normally wouldn't work on your computer.The most common uses for emulators are to play video games and run different operating systems - for example, you can put a Mac operating system on your Windows computer.An emulator is typically a program that lets you run software from a completely different device on your computer.Emulators can be an incredibly useful tool on your computer.